[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
RE: [PATCH V6 6/6] net/net.c: Add handler for COLO passthrough connectio
From: |
Zhang, Chen |
Subject: |
RE: [PATCH V6 6/6] net/net.c: Add handler for COLO passthrough connection |
Date: |
Thu, 20 May 2021 05:50:09 +0000 |
> -----Original Message-----
> From: Lukas Straub <lukasstraub2@web.de>
> Sent: Tuesday, May 18, 2021 4:39 AM
> To: Zhang, Chen <chen.zhang@intel.com>
> Cc: Jason Wang <jasowang@redhat.com>; qemu-dev <qemu-
> devel@nongnu.org>; Eric Blake <eblake@redhat.com>; Dr. David Alan
> Gilbert <dgilbert@redhat.com>; Markus Armbruster <armbru@redhat.com>;
> Daniel P. Berrangé <berrange@redhat.com>; Gerd Hoffmann
> <kraxel@redhat.com>; Li Zhijian <lizhijian@cn.fujitsu.com>; Zhang Chen
> <zhangckid@gmail.com>
> Subject: Re: [PATCH V6 6/6] net/net.c: Add handler for COLO passthrough
> connection
>
> On Tue, 20 Apr 2021 23:15:37 +0800
> Zhang Chen <chen.zhang@intel.com> wrote:
>
> > Use connection protocol,src port,dst port,src ip,dst ip as the key to
> > bypass certain network traffic in COLO compare.
> >
> > Signed-off-by: Zhang Chen <chen.zhang@intel.com>
> > ---
> > net/net.c | 160
> > +++++++++++++++++++++++++++++++++++++++++++++++++++++-
> > 1 file changed, 158 insertions(+), 2 deletions(-)
> >
> > diff --git a/net/net.c b/net/net.c
> > index 2a6e5f3886..9b0de0f332 100644
> > --- a/net/net.c
> > +++ b/net/net.c
> > @@ -56,6 +56,8 @@
> > #include "sysemu/sysemu.h"
> > #include "net/filter.h"
> > #include "qapi/string-output-visitor.h"
> > +#include "net/colo-compare.h"
> > +#include "qom/object_interfaces.h"
> >
> > /* Net bridge is currently not supported for W32. */ #if
> > !defined(_WIN32) @@ -1196,14 +1198,168 @@ void
> qmp_netdev_del(const
> > char *id, Error **errp)
> > }
> > }
> >
> > +static CompareState *colo_passthrough_check(IPFlowSpec *spec, Error
> > +**errp) {
> > + Object *container;
> > + Object *obj;
> > + CompareState *s;
> > +
> > + if (!spec->object_name) {
> > + error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "object-name",
> > + "Need input colo-compare object name");
> > + return NULL;
> > + }
> > +
> > + container = object_get_objects_root();
> > + obj = object_resolve_path_component(container, spec->object_name);
> > + if (!obj) {
> > + error_setg(errp, "colo-compare '%s' not found", spec->object_name);
> > + return NULL;
> > + }
> > +
> > + s = COLO_COMPARE(obj);
> > +
> > + if (!getprotobyname(spec->protocol)) {
> > + error_setg(errp, "COLO pass through get wrong protocol");
> > + return NULL;
> > + }
> > +
> > + if ((spec->source->host && !qemu_isdigit(spec->source->host[0])) ||
> > + (spec->destination->host &&
> > + !qemu_isdigit(spec->destination->host[0]))) {
> > + error_setg(errp, "COLO pass through get wrong IP");
> > + return NULL;
> > + }
> > +
> > + if (atoi(spec->source->port) > 65536 || atoi(spec->source->port) < 0 ||
> > + atoi(spec->destination->port) > 65536 ||
> > + atoi(spec->destination->port) < 0) {
> > + error_setg(errp, "COLO pass through get wrong port");
> > + return NULL;
> > + }
> > +
> > + return s;
> > +}
> > +
> > +static void compare_passthrough_add(CompareState *s,
> > + IPFlowSpec *spec,
> > + Error **errp) {
> > + COLOPassthroughEntry *pass = NULL, *next = NULL, *origin = NULL;
> > +
> > + pass = g_new0(COLOPassthroughEntry, 1);
> > +
> > + pass->l4_protocol = getprotobyname(spec->protocol);
> > + pass->src_port = atoi(spec->source->port);
> > + pass->dst_port = atoi(spec->destination->port);
> > +
> > + if (!inet_aton(spec->source->host, &pass->src_ip)) {
> > + pass->src_ip.s_addr = 0;
> > + }
> > +
> > + if (!inet_aton(spec->destination->host, &pass->dst_ip)) {
> > + pass->dst_ip.s_addr = 0;
> > + }
> > +
> > + qemu_mutex_lock(&s->passthroughlist_mutex);
> > + if (!QLIST_EMPTY(&s->passthroughlist)) {
> > + QLIST_FOREACH_SAFE(origin, &s->passthroughlist, node, next) {
> > + if ((pass->l4_protocol->p_proto ==
> > origin->l4_protocol->p_proto)
> &&
> > + (pass->src_port == origin->src_port) &&
> > + (pass->dst_port == origin->dst_port) &&
> > + (pass->src_ip.s_addr == origin->src_ip.s_addr) &&
> > + (pass->dst_ip.s_addr == origin->dst_ip.s_addr)) {
> > + error_setg(errp, "The pass through connection already
> > exists");
> > + g_free(pass);
> > + qemu_mutex_unlock(&s->passthroughlist_mutex);
> > + return;
> > + }
> > + }
> > + }
>
> I think this searching for a existing passthrough rule should move into a
> function. The function can then be used in compare_passthrough_del too.
Good idea.
I will change it in next version.
Thanks
Chen
>
> > + QLIST_INSERT_HEAD(&s->passthroughlist, pass, node);
> > + qemu_mutex_unlock(&s->passthroughlist_mutex);
> > +}
> > +
> > +static void compare_passthrough_del(CompareState *s,
> > + IPFlowSpec *spec,
> > + Error **errp) {
> > + COLOPassthroughEntry *pass = NULL, *next = NULL, *origin = NULL;
> > +
> > + pass = g_new0(COLOPassthroughEntry, 1);
> > +
> > + pass->l4_protocol = getprotobyname(spec->protocol);
> > + pass->src_port = atoi(spec->source->port);
> > + pass->dst_port = atoi(spec->destination->port);
> > +
> > + if (!inet_aton(spec->source->host, &pass->src_ip)) {
> > + pass->src_ip.s_addr = 0;
> > + }
> > +
> > + if (!inet_aton(spec->destination->host, &pass->dst_ip)) {
> > + pass->dst_ip.s_addr = 0;
> > + }
> > +
> > + qemu_mutex_lock(&s->passthroughlist_mutex);
> > + if (!QLIST_EMPTY(&s->passthroughlist)) {
> > + QLIST_FOREACH_SAFE(origin, &s->passthroughlist, node, next) {
> > + if ((pass->l4_protocol->p_proto ==
> > origin->l4_protocol->p_proto)
> &&
> > + (pass->src_port == origin->src_port) &&
> > + (pass->dst_port == origin->dst_port) &&
> > + (pass->src_ip.s_addr == origin->src_ip.s_addr) &&
> > + (pass->dst_ip.s_addr == origin->dst_ip.s_addr)) {
> > + QLIST_REMOVE(origin, node);
> > + g_free(origin);
> > + g_free(pass);
> > + qemu_mutex_unlock(&s->passthroughlist_mutex);
> > + return;
> > + }
> > + }
> > + error_setg(errp, "The pass through list can't find the
> > connection");
> > + } else {
> > + error_setg(errp, "The pass through connection list is empty");
> > + }
> > +
> > + g_free(pass);
> > + qemu_mutex_unlock(&s->passthroughlist_mutex);
> > +}
> > +
> > +
> > void qmp_colo_passthrough_add(IPFlowSpec *spec, Error **errp) {
> > - /* TODO implement setup passthrough rule */
> > + CompareState *s;
> > + Error *err = NULL;
> > +
> > + s = colo_passthrough_check(spec, &err);
> > + if (err) {
> > + error_propagate(errp, err);
> > + return;
> > + }
> > +
> > + compare_passthrough_add(s, spec, &err);
> > + if (err) {
> > + error_propagate(errp, err);
> > + return;
> > + }
> > }
> >
> > void qmp_colo_passthrough_del(IPFlowSpec *spec, Error **errp) {
> > - /* TODO implement delete passthrough rule */
> > + CompareState *s;
> > + Error *err = NULL;
> > +
> > + s = colo_passthrough_check(spec, &err);
> > + if (err) {
> > + error_propagate(errp, err);
> > + return;
> > + }
> > +
> > + compare_passthrough_del(s, spec, &err);
> > + if (err) {
> > + error_propagate(errp, err);
> > + return;
> > + }
> > }
> >
> > static void netfilter_print_info(Monitor *mon, NetFilterState *nf)
>
>
>
> --